Razor-stropping machine.



M. H. AVRAM. RAZOR STROPPING MACHINE.

APPLICATION FILED MAR` 25, 1909.

Patented Mar. 1, 1910.

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Umain M os H AVRAM, or NEW YORK. N.

.ASSIGNOR- TO `WONDER SALES COMPANY, OF

NEW .iOlbK7 N. Y., .A CORPDRA'IIOINF OF NEW YORK.

RAZOR-STROPPING MACHINE.

aao'gaae.

Specification of Letters Patent.

Patented Maga'. l., i910.

' Application tiled March 25, 1909. Serial No. 485,620.

B'eit known that l. vMots Il. Aman. a States. residing' at NeivYoi-keity` Manhattan. eount'y of New York; State ot' New York. have 'inventednewand uset'ul lmprovements in Razon td lapping-Machlues, ot' whieh thefollowing` isa"speeitieatimi. i

;'l`h.is invention relates4 to an improved maeh'ine` t'or slropping'razor blades.`more partlieula'rly:adapted tor sharpening the blades ot'safety razors.

lThe niaehine consistsessentially of a pair otfi'i tnge'ared rollerswhich may be simultan'e'( .ly rotated vin opposite directions. lnproximity :to lthese rollers Vthere is arranged an,automatieallyoscillating and longitudinally reeiproeating blade holder which brn theblade. carried by said holder into alternate engagement with onev or theother roller'. 's that the blade will be at'taeked at lilith sie tounitormly sharpen its cutting eqrlle.'K

lu theaeeompanying` drawing: Figure l .infront View ot my improved razorstropfpiugan'aehnw; Fie'. 2 a plan thereof: Fig. 3 :i rear vview partlybroken away; Fig. 4 a aeetipn on line t -l. Fig'. Q. with the blade lderemitted: Fig'. 5 a .section ou line 3, with some ot" the parts omitted;the. roller earryingj the handle: Fig'. T a cross section through aroller; Fig. S a` ia'ee View ot the blade holder-, and ltie. E) anenlarged eross section on' l i 1ie tlv-tlltigz iQ.

li-e: uiuneral l iudieates a rear plate or une: the bent end l1 ot whiehis provided 'l`o plate l0 are secured a pair ot' relatively lixedyshafts or pins l. lllpassing through eorresponding' pertorations pifthe iram and lirmly held thereto by unts .1-5. i

Upon eaeh ote the pins lil. 14, there Vis a .stropping rollerComprisailang'ed rear disk itt. a tlanged :iront T and a shell or barrelltl ot" substair flatly eylindrieal shape. said barrel engaging'the diskflangesv to whit-h it is secured. 'l` h ..:sleeve or hub lt) ot eaehtrout disk li' reeeiied within a rorrespoiuling bore ot a epnnxeeliugt'rout piece or plate 20. 'llhe hub ot lhatdisk lT which is mounted onpiu ll pr-ojeets slightly beyond plate Q0 tor the engagement with ahandle 21. l Pin lilas well as pin'tl is provided at its front end witha head 2Q wlueh prevents a disengagement ot' Ireadily understood fromFig'. i'.

razors now-in the marl-:et

' springthe stropping .roller and plate 2O from. said pin. Each shell18- is covered with a layer 2? of leather or other suitable stropping material, a layer 2l et telt being interposed between shell 18 and layer23, layer Q4.- torming curely wedge the ends of layers Q3, Q4 into theformed between jaws E25. as will be To lthe hub 27 of eaeh rear disk 1ois secured a ltoothed wheel Q8 meshing' into one another so that byturning handle 21, the stropping rollers will be rotated in oppositedirections.

The distance between vins lll. l-'t and the outer` diameter ot the.droppingrollers should be such as to 'form a narrow `gap Q9 betweensaid rollers afs-show] in Figs. 1 and 2.

The blade holder consists essentially ot a pair of Clamping members 30.31, the widened lower extremities ot whieh are bent inwardly to t'orm apair ot' shouldered jaws` 3Q. 33. reslwetirely, between whieh the bladeill to bestroplied is inserted. TMember 30 is provided with a pair otlaterally projecting studs journaled in eorrespondine` ears 0r lugs 3Gformed on member 31. The upper ends of memberst), 3l are normallydistended by a spring` 37 interposed between said members and tending'to torce jaws 33 toward one another. To more seeurely hold the bladebetween the jaws.a tig'ltenin eY screw 3S is tapped into member 30, Saidserew being adapted to bear against member 31.

lylembers Btl, the blades of the various forms ot safety may be readilyseeured thereto. lior-holding.Y the blade ot the so-ealled Gillettesafety razor a 39 is rire-ted to member 30, said spring' being providedwith a pair of studs l0 which7 by passing through eorrespontb ing'apertures ot' member 30, are adapted to engage the holes ot said blade.Member S0 is further provided with means for tirmly holding the blade ofthe Star safety razor in the proper height. For this' purpose member 30is provided with, a. pair of 31. are so constructed that' parallelvertical slots 4l. Within which "are with a rib extending along theirrear edge,

a blade of this construction being shown in Fig. l. The rib 45 of thisblade rests upon the upper shoulders formed on jaws 32, 33, t-helatterbeing pressed againstthe blades by tightening screw 38.

Lugs 36 are perforated as at 46 for the engagement with a tubular shaftor sleeve 47 slid-ably mounted upon a pint-le 48.A The Vlatter isjournaled in a bearing 49 formed on an 'upwardly projecting arm 50 ofplate 10. At its forward end, sleeve 47 is threaded as at 51 for theengagement with a nut 52 which secures the blade holder againstaccidental disengagement from the sleeve during the stropping operation.lo sprevent a rotation ofthe holder upon sleeve 47,

the sleeve is provided with a nose 53 engagh u nate engagement wlth apair ofstroplnng ing a corresponding notch G8 of rear lug 36. Pintle 48,carries a pin or`feather 54 which is received in a Alongitudinal slot 55formed in sleeve 47, so that the latter will participate in theoscillating movement iinparted to pintle 48 in the following manner: Toeach gear wheel 28 is secured a cam disk 56. Between cams 56 is arrangeda cam roller 57 carried by the lower end of a. re-

silient cam lever or arm 58 the upper end of u which is firmly securedto pintle 48. Cams y56 are so shaped as to impart roller 57- anosclllatlng movement which thus causes a corresponding oscillation ofpintle 48, sleeve" 47 and biadehoider so, 31. Y in aus my the blade 34carried by said holder will be brought into alternate engagement withone or the other stropping roller. By making arm 58 in the form of aspring, theblade will be forced against the rollers with a sulicientpressure so as to effect a quick sharpening thereof. The relativeadjustment of the rollers should be such that when the blade contactswith one roller, the key 26 of the other roller passes the blade andvice versa. During this oscillation, an additional longitudinallyreciprocating movement is imparted ner: In arm 50 of plate 10 isjournaled the aXle 59 of a pinion 60 meshing into one of the-'gearwheels 28. Pinion 60, in turn, meshes into a gear wheel 6l looselymounted upon pintle 48.. tlear vwheel 6l carries a cam 62 engaged by apair of studs 63 projecting rearwardly from a collar-ttt which is firmlysecured to sleeve 47. Between collar 64 and arm 50, thereare arranged apair of to blade 34. in the following man-` springs 65 which tend toihold pins 63 inl permanent engagement with cam' G2. It will thus be seenthat by turning handle 2l, gear wheel 61 and cam 62 receive rotarymovement, which, by pins vand collar G4, causes a correspondinglongitudinal reciprocation of sleeve 47, blade holder 30, 3l, and

blade 34 carried by said holder. This re,- eiprooative movement ofsleeve 47 upon pintle 48 is rendered possible by providing thelongitudinal slot in said sleeve, while in 54 engaging said slot causesthe desired oscillation of the holder during its reciprocation.

In order to prevent any reverse movement of the stropping rollersagainst the cutting edge of the blade, a spring pawl (5G is pivotA ed toarm 5t), said pawl engaging the teeth blI one of the gear wheels 28. Toprevent any cutting et' layers 23 n'hile inserting the razor blade,plate 2() is provided with a pair of spaced lingers (57 that form aguard for such blade. 'j

.lt will be seenthat by the construction described, novel and.ejlfective means are pro- 'vidcd for sharpening or stropping thebladesI of the safety razors new in the market. By bringing the blade tobe stropped into alter! l`he interpolation of the and the blade to besharpened, permits a slight variation of the distance between itscutting edge and ,the pint'l vcarrying-t e blade holder so that thebladerequires no minute adjustment within the holder for Aetlecting aperfect sharpening. 'lhis ad vantage is dueto the fact that theresilient arm will at all times insure a prbper engagement of the bladey.with the stropping roll-ers, while' simultaneously pressing the bladeyagainst said rollers.

.l claim:

l. A razor stropping machine comprising a pair of stropping rollers,means for simultaneousljy rotating said rollers inV opposite directions,a blade holder, and yielding means operatively'connected to said rollersfor oscillating said blade holder.

2. razor stropping machine comprising a pair of stropping rollers, meansfor simulu taneously rotating said rollers in opposite directions, camscarried by the rollers, a

blade holder, a resilient arm operatively' connected to said'holder andengaging the cams, and means for longitudinally reciprocating the bladeholder.

il.. A razor stropping machine comprising a pair of stropping rollers,means for simultaneously rotating said rollers in opposite directioiis,a pairrot first cams carried by the rollers, a resilient arm engagingthe cams, a

second cam inter-geared with one ol said i-olleis, and a blade holderoperatively conv va'pair` of stropping,` rollers, means forsimultaneousl-y rotating said rollers in opposite directions, a `pair ofirst camscarried by the rollers, a pintle, a resilient arm securedthereto and engaging said irstcams, a second cam rotatably mounted uponthe pintle and intergeared with one of said rollers, a spring-influencedsleeve slidably mounted upon the pintle and having. a stud that engagesthe second cam, and a blade holder removably secured to the sleeve.

V5. A razor stropping machine comprising apair or' stropping rollers,means for simultaneously rotating said rollers in `opposite directions,`a` pair of irst cams carried by the rollers, a piutlehavinga eather,aresilient arm secured to the pintle and engaging said first. cams, a,second cam rotatably mounted upon the pintle and intergeared with one ofsaid rollers, a spring-influenced slotted sleeve slidably mounted uponthe pintle, the sleeve slot beingl engaged by the feather, a stud on thesleeve that 'engages the second cam, and a blade holder removablysecured to t-he sleeve.

6. In a razor stropping machine, a rea'r plate, a pair of pins securedthereto, and intergeared stropping rollers rotatably mounted upon thepins, combined with a holder operatively connected to the rollers andadapted to receive a razor blade, a front plate connecting the pins, anda blade guard formed on said plate.

T. ln a razor stropping machine,` a blade holder comprising a tirstmember having a v`pair of lugs and a second perforated member pivoted tosaid lugs and having a pair of parallel slots, a spring secured to thesecond member, studs on said spring that engage the perforations of saidsecond member, a U-shaped bail engaging slots of the second member andhaving a pair of inv'ardly projecting pronos, and a set screw tappedinto the bail.

MOS H. AV AM.

lVitnesses:

(ti-semen Tisci-ILER, ARTHUR F. ZUMPE.

